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geography and division of Ryukyu Islands

…into three major groups: the Amami island chain in the north, the central Okinawa islands, and the Sakishima islands in the south. Administratively, the Ryukyus are part of Japan, the Amami group constituting a southern extension of Kyushu’s Kagoshima prefecture (ken) and the Okinawa and Sakishima islands making up Okinawa…